I was running the Windows 7 upgrade advisor and it gave me a result for RAM that I wasn't expecting. My MacBook Pro has 4 GB of RAM. At least that's what I ordered, and that's what OS X says. When I look at the RAM on Windows XP under VMWare Fusion, it tells me I have 512 MB of RAM. Where I look at the RAM on Windows XP under BootCamp, it says I have 2.73ish GB of RAM (which doesn't even make sense). What is that about?